A Mexican search group that helps locate missing persons said it began looking for Nancy Guthrie after receiving an anonymous tip suggesting she had been buried in an unmarked grave near the border. Ramona Guadalupe Ayala Ortiz, director of Buscando Corazones Nogales, said the organization received the tip Wednesday regarding Guthrie, 84, who was abducted from her home in Tucson, more than 70 miles north of the border city of Nogales. #nancyguthrie #savannahguthrie